Sumitomo Metal Mining had 82 patents in batteries during Q1 2024. Sumitomo Metal Mining Co Ltd filed patents in Q1 2024 for a cathode active material production method, a method for recovering valuable metals, a positive electrode active material for lithium ion batteries, and a process for producing lithium-transition metal composite oxides. These inventions focus on improving efficiency, cost-effectiveness, and performance in the production and use of materials for energy storage applications. GlobalData’s report on Sumitomo Metal Mining gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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Sumitomo Metal Mining grant share with batteries as a theme is 64% in Q1 2024. Grant share is based on the ratio of number of grants to total number of patents.

Recent Patents

Application: Nickel composite hydroxide and manufacturing method thereof, cathode active material for nonaqueos-electrolyte secondary battery and manufacturing method thereof, and nonaqueous-electrolyte secondary battery (Patent ID: US20240105935A1)

The patent filed by Sumitomo Metal Mining Co Ltd. describes a method for manufacturing a cathode active material for nonaqueous-electrolyte secondary batteries using a nickel composite hydroxide precursor. The process involves controlling the pH values during nucleation and particle growth to achieve suitable particle size and uniformity. Additionally, the crystallization reaction is carried out in a non-oxidizing atmosphere with specific oxygen concentration and agitation power requirements.

The method includes mixing a nickel composite hydroxide with a lithium compound, followed by a calcination process in an oxidizing atmosphere to form a lithium nickel composite oxide with a hexagonal crystal structure. The process may also involve a heat treatment step before mixing, adjusting the lithium mixture composition, and pre-calcination during the calcination process. Overall, the patent aims to produce a cathode active material with specific composition and crystal structure suitable for nonaqueous-electrolyte secondary batteries.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.